Fluid control mechanism for motors.



H. A. CARPENTER. FLUID CONTROL MEGHANISM FOB. MOTORS. APPLICATION FILED MAY 22, 1905. BEEBWED JAN, 7, 1914.

Patented July 28, 1914.

H. A. CARPENTER. FLUID GONTROL MEGHANISM FOR MOTORS. APPLICATION FILED MAY 2z, 1905V RBNEWBD IAN. 7, 1914.

1 1 05,06 1. Patented 111151,28, 1914. @2. 6 '5. 3 SHEETS-SHEET Z.

ijiiQg-5-1 42 ma 36 O O O www 19...@ /lofmoy H. A. CARPENTER. FLUID CONTROL MEOHANISM POR MOTORS. APPLIGATION FILED MAY 22, 1905. RBNBWED JAN. '7, 1914.

1,1 05,06 l Patented July 28, 1914.

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HENRY A. CABPENTER, OF SEWICKLEY, PENNSYLVANIA, ASSIGNOR TO RITEBfCONLEY f MANUFACTURING COMPANY, 0F 'PITTSBURGH,.PENNSYLVANIA, A CORPORATION j' l or'nnw JERSEY.

FLUID CONTROL MEGBIANISM FOR MOTORS.

Application led Kay 22, 1905,

To all whom it may concern:

Be it known that I, HENRY A. CARPENTER, a citizen of the United States, residing at Sewickley, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Fluid Control Mechanism for Motors, of which improvement the following is a specification.

This invention relates to certain new and useful improvements in control mechanism for fluid vpressure motors, and relates more particularly to the control of motors for operating gas retort charging and drawing machines.

The object of this invention is to provide eliicient and simple means whereby the direction and speed of the motor may be controlled by a single lever, and also .to provide means for automatically stopping the motor when certain parts of the mechanism have been moved to predetermined positions.

In describing the invention reference will be had to the accompanying drawings, in which--y Figure 1 is a Side elevation of a gas retort charging machine showing my l improved lmotor control mechanism applied thereto.

Figs. 2, 3 and 4 are planviews of the different positions of the control valve, the cover being removed from the valve casing. Fig. 5 is a vertical section taken on the line 5 5 of Fig. 2. Fig. 6 is a vertical section taken on the line 6-6 of Fig. 2. Fig. 7 is a plan view. of the control valve and actuating levers. Fig. S is a rear elevation, partly broken away, of the 'automatic stop mechanism. Fig. 9 is a side elevation of t-he motor showing the, reversing cylinder in section. Fig. 10 is a sectional detail of the check valve which is in the pipe leading to the reversing cylinder. l Fig. 11 is a sectional detaily of the clutch connection lever.

Referrin to the drawings, the reference numeral 1 indicates a bench of retorts longitudinally in front of which the charging machine is adapted to be moved, The charging machine, as illustrated, consists of a suitable frame` 2, which is mounted on trucks, -the wheels, 3, of which are adapted to travel on the rails 4.

5 is a vertically movable fuelA hopper which ismounted in the frame 2, and to the Specification of Letters Patent. Serial No. 261,634. Renewed January 7, 1914. Serial No. 810,880.

lower portion of which the charging frame, 6, 1s secured, to which the platform 7 is secured from which the operator may more Patented July 28, 1914.

advantageously actuate and observe the operation of the fuel scoop and the operating mechanism during the Several movements or operations of the machine.

8 is a block which Ais suitably secured to the charging frame in which the motor control lever 9 and clutch actuating lever. 10 are pivotally mounted, the said levers being connected to the vertical rods 11 and 12, respectively, by a spline or feather connection for the purpose of permitting said levers to slide-or move up and down-on said rods, as the charging frame and connected parts are elevated and lowered, whereby said levers are always in a position accessible to the operator on the platform 7. The upper and lower ends of said vertical rods are rotatably mounted in sockets formed in the brackets 13, which are suitably secured to the frame 2 of the machine. A motor 14 is permanently secured'on the said frame, 2, and is adapted to operate the mechanism which raises and lowers the hopper and its connected parts. The said motor 14 is provided with a power shaft on the out-er end of which is mounted a worm 15 which meshes with and transmits power to the worm wheel 16 which is mounted on the extreme upper end of the shaft 27, and to the bevel gear-wheel 18 (which is normally loosely mounted on said shaft 27 at such times assaid bevel wheel 1 8 is held rigid or fixed upon said shaft 27 by means of the clutch 17. The saidbevel wheel 18 meshes with the bevel wheel 1S) mounted on the shaft 19 and when fixed by said clutch 17 o n said shaft 27 as heretofore described, transmits motion to said bevel wheel 19 and shaft 19'. A worm 20 is mounted'on said .shaft 19 and transmits power to a worm wheel 21 mounted on the` shaft 22, on which a drum 23 is also mounted over which the chains 24-24 operate for the purpose of eleva-ting and lowering the hopper and its connected parts, the ends of said chains being fastened to opposite sides of the hopper, as shown, to permit of this.

The beveled gear 25 which is mounted on .one of the axles meshes with a beveled gear 26 mounted on the lower end of a short shaft 1 72 on the upper end of which is formed a clutch member 17, which is adapted to be connected to the shaft 27 byA means of the clutch 17 which is positively driven from the motor, and by this clutch mechanism means are provided whereby the motor may be used to either elevate or lower the hopper and its connected parts or to positively move the entire machine transversely in front of the retorts dependentl upon the direction in l which the clutch is actuated.

The details of the motor and clutch mechanism are as follows :-The motor, within the case of which the reversing mechanism is located, may be of any well known type. A shaft 14 is carried from the said reversing mechanism to the exterior of the casing, and a crank 28 is secured thereto; the rod 29 which passes through a stuffing box 29 is connected to said crank and is also connected to the piston 30 which is contained within the reversing cylinder, as shown in Fig. 9. The lower end of said cylinder is connected with the pressure supply pipe by the pipe 32, whereby pressure is admitted upon the lower side of said piston 30, and there being no pressure on the top of the piston 30, normally, the same is held elevated. The pipe 33 connects the upper end of the cylinder 3l with the control valve 34 and when the valve is so actuated thatpressure is admitted to the vupper end of the cylinder 31 the piston 30 will be forced down, due to the difference in area of the two sides of the piston, the pressure receiving portion of the lower side being decreased to the extent of the area of the rod 29, and

' this actuation of the piston 30 will actuate port 43 from the side of the reversing mechanism whereby the direction of rotation of the motor will be reversed. A pipe 35 extends from and connects said valve 34 with the pressure inlet of the motor. The said valve 34 is composed of a body portion or casing and thel slide valve 36, the said slide valve being actuated by the rod 37 which passes through a stuffing box 38 in the casing, the outer end of the said rod 37 being connected by a pin or bolt to the end ofA a crank 39 which is secured on the upper end of the rod l1, whereb v when the said rod 11 is partially rotated in either direction the slide valve 36 will be correspondingly moved.

Connected to and communicating with the interior of the casing 34 is a fluid pressure inlet pipe 40 which may be controlled by a valve 41, the pipes 33 and 35, before mentioned, leading from said casing to, respectively, the upper end of the reversing cylinder and the motor pressure 33 is connected with the lower interior of the casing 34 by the'port 42, and the pipe 35 is connected y therewith by the circular which longitudiinlet. The pipe' nally of the casingr extend ports 44, 44', the lower walls of which are angularly inclined toward the said port 43. An exhaust port 45 is also connected to and communicates with the bottom of the easing by means of the port 45. The under side of the slide valve 3G is cutout to form the longitudinal port 46 which is adapted to connect the port with the exhaust port 45. A transverse port 47 is adapted to connect with the said exhaust port 45'.

As shown in Fig. 2 it will be seen that the connection between the pressure inlet and the ports 42 and 43 is cut oil' by the slide valve 36 while the port 42 is connected with the exhaust port 45 by the port 46 in the slide valve and the port 43 is connected with the said exhaust port 45 by the port 47 these connections being clearly shown in Figs. 5 and 6.

Assuming that' it is desired to run the motor in a direction reverse to the normal running direction; the control lever 9 is so actuated that the slide valve is slowly moved from left to right (as shown in Fig. 3 of the drawings) whereby the port 42 is first uncovered by the said movement of the slide valve and the pressure will then pass through the said port 42 to the pipe 33 to the reversing cylinder 3l where it acts on the piston 30, forces the said piston down- Wardly and actuates the crank 28, which is connected to the rod 29 of said piston, thus reversing the shaft 14 connected to the reversing mechanism. This operation takes place almost simultaneously with the partial uncovering of the port 42 and further movement of the slide valve 36 uncovers the port 44 extending laterally from port 43 and nally the port 43, as shown in Fig. 3. Assuming the slide valve 36 is again in closed or non-operative position, as shown in Fig. 2, and it is desired to operate the motor in the normal running direction, the actuation of the lever in a reverse direction to that just described, causes the slide valve to move from right to left and the port 42 is, during the entire movement, connected with the exhaust port 45 by the port 46 in the slide 'valve 36 but the extension port 44 and port 43 will be gradually uncovered.

' It will be noted that the width of the exhaust port 45 and port 47 in the slide valve is such that the same Will be out of register before the pressure is permitted to enter either of the extensions 44 and 44 and it Willalso be noted that inclining the bottoms of the extensions as shown and hereinbefore mentioned provides a means whereby the volume of fluid pressure passing to the motor may be efectually controlled.

The check valve 48 located in the pipe 33, which connects the reversing cylinder with the valve 34 is provided with a screw 49 in which a taper 4slot 50, is formed by means of the port 43 which the pressure in passing. to the reversing cylinderacts against the .liap' or cheek, whereby the'pressure admitted to the cylinder is controlled thus preventing any unnecessary pounding and consequent wearing of the ports; the pressure may, however, readily pass from 'the Cylinder as it acts with, instead of against the check.

When the motor is operated to elevate or lower the hopper and connected parts, it is obvious that should the said hopper and connected parts be moved too far in either direction, serious damage might be done to the machine, and to overco-me thisdiiiiculty, I provide means whereby when the said hopper and connected parts' reach a pre-determined position in either direction, the motor will be automatically stopped, by cutting off the pressure from the same, by means of the device which I-will now describe.

Suitably secured to the rear of the block 8. is the plate 51, the upper and lower ends of which are angularly out on opposite edges as shown in F ig. 8. Secured to the rodv 11 at points adjacent tothe brackets 13, in which said rod is mounted, are the collars 52, on which projections 53, areformed, the said collars being so secured to the rod that when the plate is in any other than the extreme upper or lower position, the rod 11 may be partially revolved in either direction, to actuate the motor in either direction, but, assuming the motor to be in operative position to elevate the hopper, connected parts and the plate 51 carried thereby, as the said plate approaches its maximum elevation, theupper cam face of the 'same engages the lug or projection 53 on the upper collar, and as the plate is gradually elevated, would, through the medium of the said lug and collar rotate the rod 11, whereby the valve would be gradually brought to the inoperative position, and the lever 9 could then only be moved in the direction to operate the motor that the parts would be lowered. Upon the parts described approaching their maximum lower position, the lower face of the plate would engage the projection or lug 53, on the lower collar and partially rotate the rod 11, thus stopping the motor and then only permitting itv to be actuated to elevate the parts.

In the type of clutch used; i. e., a positive tooth clutch, it frequently happens that the members thereof are in such relation,^that when it is desirable to shift the same, the said teeth in the members do not register and to obviate the necessity of waiting until such registration takes place before 4the lever l() can be thrown into the position necessary to lock it, I provide a yieldingl connection such as shown in detail in Fig. 11. The shifting clutch mem-ber which is connected with the counterweighted shaft lever 54 is secured to a rock shaft 55, on which a crank 56 is mounted as shown in Fig. 1. The lever 1o is sli'damy Secured to the rod 12,"aiid'to lthe llower end of the said rod a crank '57 connected, the said crank being pivot-ally connecte'dto the rod 58 which 70 telescopes withln a part'59 which 1s connected to the crank 56 secured upon the rock vmitting the lever 10 to be forced to its engaging notch, and as soon as the teeth of the clutch had registered, the said spring, which had been compressed would force the clutch members together.

The specific form of control valve 34 is not claimed herein, this valve forming the subject-matterof a divisional application.

I claim `as my invention and desire to secure by Letters Patent:

1. In a controlling mechanism for the motors of gas-retort chargers and dischargers, the combination with a motor, of reversing means for said motor, means for simultaneously controlling the flow of the motive agent to said reversing means and to the motor, means for manually actuating said controlling mechanism, and means coperating with said actuating means at, predetermined limits of movement of the latter, whereby to automatically operate saidcontrolling means through said actuating means.

2. In a controlling mechanism for the motors of gas-retort chargers and dischargers, the combination with a motor, of reversing means for said motor, a fluid-pressure device for actuating said reversing means, 11o means for simultaneously controlling the flow of the motive agent to said Huid-pressure device and to the motor, means for manually actuating said controlling mechanism, and means cooperating with said actuating means at predetermined limits of movement of the latter, whereby to automatically operate said controlling means through said actuating means.

3. In a controlling mechanism for the motors of gas-retort chargers anddischargers, the combination with a motor, of reversing means for said motor, a fluid-pressure device for actuating said reversing means, means for simultaneously controlling the How of the motive agent to said reversing means and the motor, a vertically-movable support, a lever carried by said support, connections between said lever and controlling mechanism for manually actuating the latter, and means coperating with the actusigned my name inthe presence of two subatmg elements of the controlling mechascribng witnesses, nism at predetermined limits of movement,

whereby to automatically Voperate said con- HENRY A" CARPENTER' trolling means throughv said actuating elel In the presence of ments. CLARENCE A. WILLIAMS,

In Vtestimony Wheeof, I have hereunto JAMES C. HERBON. 

